2 releases
0.1.2 | Feb 11, 2022 |
---|---|
0.1.1 | Jul 27, 2021 |
0.1.0 |
|
#741 in Embedded development
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35KB
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SLoC
TDC1000
This crate is a no_std driver for the TDC1000 Ultrasonic Sensing Analog Front End
Datasheet
https://www.ti.com/lit/gpn/tdc1000
About this driver
This driver allows you to configure the tdc1000 analog frontend device via spi. This driver works on an NUCLEO-L433RC when compiled in release mode.
Usage
Add this to your Cargo.toml:
[dependencies]
tdc1000 = "0.1.2"
And this to your main.rs
//SPI
let sck = gpioa.pa5.into_af5(&mut gpioa.moder, &mut gpioa.afrl);
let miso = gpioa.pa6.into_af5(&mut gpioa.moder, &mut gpioa.afrl);
let mosi = gpioa.pa7.into_af5(&mut gpioa.moder, &mut gpioa.afrl);
let mut cs = gpioa
.pa4
.into_push_pull_output(&mut gpioa.moder, &mut gpioa.otyper);
cs.set_high().unwrap();
//TDC 1000 enable
let mut enable_pin = gpioc
.pc8
.into_push_pull_output(&mut gpioc.moder, &mut gpioc.otyper);
enable_pin.set_low().unwrap();
//TDC 1000 trigger
let mut trigger_pin = gpioc
.pc9
.into_push_pull_output(&mut gpioc.moder, &mut gpioc.otyper);
trigger_pin.set_low().unwrap();
//TDC 1000 start pulse pin
let start_pin = gpioc
.pc7
.into_pull_down_input(&mut gpioc.moder, &mut gpioc.pupdr);
//TDC 1000 stop pulse pin
let stop_pin = gpioc
.pc6
.into_pull_down_input(&mut gpioc.moder, &mut gpioc.pupdr);
let mut tdc1000 = Tdc1000::default();
tdc1000.set_tx_frequency_divider(TxFrequencyDivider::DivideBy8);
tdc1000.set_number_of_tx_pulses(TxPulses::new(1));
tdc1000.set_tx_pulse_shift_position(TxPulseShiftPosition::new(5));
tdc1000.set_time_of_flight(TimeOfFlightValue::new(TimeOfFlightValue::HIGH));
tdc1000.set_short_tof_blank_period(ShortTofBlankPeriod::T0Times32);
tdc1000.write_settings(&mut cs, &mut spi).unwrap();
loop {
enable_pin.set_high().unwrap();
delay_ms(10_u32);
let mut timeout = 0_u32;
while start_pin.is_low().unwrap() && timeout < SOME_TIMEOUT {
timeout += 1;
}
let start_cnt = DWT::get_cycle_count(); // Use cycle count to measure time
timeout = 0;
while stop_pin.is_low().unwrap() && timeout < SOME_TIMEOUT {
timeout += 1;
}
let stop_ctn = DWT::get_cycle_count();
let measured_cycles = stop_cnt - start_cnt;
enable_pin.set_high().unwrap();
delay_ms(5000_u32);
}
License
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Dependencies
~71KB